Quadratic Formula Calculator
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Quadratic Equation ax^2 + bx + c = 0
Result
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About Quadratic Formula Calculator
This Quadratic Formula Calculator is fast, accurate and 100% private. All calculations run locally in your browser, so your information never leaves your device. No sign-up, no downloads, works beautifully on mobile and desktop.
FAQ
What is the quadratic formula?▶
x = (-b +/- sqrt(b^2 - 4ac)) / (2a). The discriminant (b^2 - 4ac) determines the nature of the roots.
What does the discriminant tell us?▶
If the discriminant is positive, there are two real roots. If zero, one real root. If negative, two complex roots.